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Integers

An integer is a number that can be expressed as a whole number. In technical math jargon, the integers are the natural numbers {0, 1, 2...} their negatives and the number 0.
Integers Not integers
22 $$ \frac 1 2 $$
$$ 0 $$ $$ \pi $$
$$ -5 $$
$$ -1,001 $$ $$ \frac 3 4 $$
$$ \sqrt 4 $$
because we can simplify to 2
$$ \sqrt 2 $$